Fig 3. Neutralizing antibody titers following inoculation with 44 PFU of ZIKV-DAK.

Plaque reduction neutralization tests (PRNT) were performed on serum samples collected at 14 dpi (45/14-4 and 30/14-1) or approximately 28 dpi (all other animals). Data are expressed relative to infectivity in the absence of serum. A) Neutralization curves. B) PRNT₉₀ and PRNT₅₀ values were estimated using nonlinear regression analysis and are indicated with dotted lines in Panel A.